Out of all the conversion cylinders RD , Kirst and Howells which is considered the best, I have all three and really the only differences I see is the velocity allowed which by Kirst is 1000 fps all the others are at 800-850fps. I am interested in taking the extra 1860 pietta I have and turning it into a snub nose project and was wondering if there are any that did it and are there any pitfalls i need to be careful of before I do. I have looked at all the info I can find but if anyone can think of something that may help I am all ears. Thanks ahead of time for your help and experience.